Frequency converter over-temperature

What does 14 mean?

The heatsink temperature of the frequency converter has exceeded 90°C (or 77°C for FR6 690V drives), indicating overheating. An overtemperature warning is issued at 85°C (or 72°C). Prolonged operation at high temperatures significantly reduces the lifespan of power components and can lead to immediate drive shutdown.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Check the ambient temperature around the drive and ensure it is within the specified operating range.

2. 4

   Reduce the switching frequency if it is set too high for the current ambient temperature and motor load conditions.